Book Image

Learn C# Programming

By : Marius Bancila, Raffaele Rialdi, Ankit Sharma
5 (1)
Book Image

Learn C# Programming

5 (1)
By: Marius Bancila, Raffaele Rialdi, Ankit Sharma

Overview of this book

The C# programming language is often developers’ primary choice for creating a wide range of applications for desktop, cloud, and mobile. In nearly two decades of its existence, C# has evolved from a general-purpose, object-oriented language to a multi-paradigm language with impressive features. This book will take you through C# from the ground up in a step-by-step manner. You'll start with the building blocks of C#, which include basic data types, variables, strings, arrays, operators, control statements, and loops. Once comfortable with the basics, you'll then progress to learning object-oriented programming concepts such as classes and structures, objects, interfaces, and abstraction. Generics, functional programming, dynamic, and asynchronous programming are covered in detail. This book also takes you through regular expressions, reflection, memory management, pattern matching, exceptions, and many other advanced topics. As you advance, you'll explore the .NET Core 3 framework and learn how to use the dotnet command-line interface (CLI), consume NuGet packages, develop for Linux, and migrate apps built with .NET Framework. Finally, you'll understand how to run unit tests with the Microsoft unit testing frameworks available in Visual Studio. By the end of this book, you’ll be well-versed with the essentials of the C# language and be ready to start creating apps with it.
Table of Contents (20 chapters)

Understanding control statements

Control statements allow us to control the flow of execution of a program. They also allow us to execute a particular block of code based on a certain condition. C# defines three categories of control statements, as mentioned here:

  • Selection statements: if and switch
  • Iteration statements: for, while, do-while, and foreach
  • Jump statements: break, continue, goto, return, and yield

We will explore each of these statements in detail in the following sections.

Selection statements

Selection statements allow us to change the execution flow based on whether a condition is true or not. C# provides us with two types of selection statements: if and switch.

The if statement

The following snippet shows the syntax of an if statement:

if (condition1)
else if(condition2)

If condition1 evaluates to true, then statement1...